Ivan kula
Ivan kula (Serbian: Иван кула, lit. 'Ivan tower'; Ivanova kula, Иванова кула, 'Ivan's tower') is a fortress of Ivan Kosančić, located 33 km south of town Kuršumlija, Serbia, on the mountain Radan. The fort is located on a separate top 1076 m. near the village of Ivan Kula, southwest tip of Đak (1400 m).